Welding jig



FIG. 1 is a front elevational view of a welding jig showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right end elevational view thereof; and,

FIG. 5 is a perspective top view thereof, with the dotted lines representing two sections of pipe aligned by the welding jig.

The broken lines shown in FIG. 5 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a welding jig, as shown and described. 